RV.Net Open Roads Forum: Tech Issues: Filling of Propane tank

RV Blog

  |  

RV Sales

  |  

Campgrounds

  |  

RV Parks

  |  

RV Club

  |  

RV Buyers Guide

  |  

Roadside Assistance

  |  

Extended Service Plan

  |  

RV Travel Assistance

  |  

RV Credit Card

  |  

RV Loans

Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  

Search:   Advanced Search

Search only in Tech Issues

Open Roads Forum  >  Tech Issues

 > Filling of Propane tank

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 2  
Next
Sponsored By:
craig7h

Branson MO area

Senior Member

Joined: 03/23/2002

View Profile





Offline
Posted: 06/01/21 05:56am Link  |  Quote  |  Print  |  Notify Moderator

Does it make a difference if you get your propane filled at 8900 ft or 1000 ft. Reason I ask is right now I am at 8900 ft and could top off the onboard tank. Or am I better off to wait until I get to a lesser elevation? Is it a quantity thing.


Itasca Meridian SE 36g
Road Master Tow Dolly

valhalla360

No paticular place.

Senior Member

Joined: 08/19/2009

View Profile



Good Sam RV Club Member


Posted: 06/01/21 06:20am Link  |  Quote  |  Print  |  Notify Moderator

The "L" in LPG is for liquid. They are putting a liquid in the tank.

There may be a difference but so small, you likely couldn't measure it.

Temperature and altitude can mess with the appliances that use the LPG. The propane evaporates and passes thru the piping systems as a gas. Here altitude can have an impact as there is less oxygen available.


Tammy & Mike
Ford F250 V10
2021 Gray Wolf
Gemini Catamaran 34'
Full Time spliting time between boat and RV


Old-Biscuit

Verde Valley

Senior Member

Joined: 06/20/2009

View Profile



Posted: 06/01/21 10:50am Link  |  Quote  |  Print  |  Notify Moderator

tank is a closed pressure vessel....atmospheric pressure has no affect on the internal pressure.
**Can affect the fuel/air ratio AT the appliance burners

tank is under 100#-250# depending on the Temperature of the ambient air as heat can cause more or less liquid to vapor action

Top off as needed wherever you are.

They will pump liquid into tank until:
Fix Gauge spews liquid (bleed valve cracked open during filling)
OPD shuts off flow
**Both are set for 80% tank capacity as that is FULL


Is it time for your medication or mine?


2007 DODGE 3500 QC SRW 5.9L CTD In-Bed 'quiet gen'
2007 HitchHiker II 32.5 UKTG 2000W Xantex Inverter
US NAVY------USS Decatur DDG31

Grit dog

Black Diamond, WA

Senior Member

Joined: 05/06/2013

View Profile


Offline
Posted: 06/01/21 11:39am Link  |  Quote  |  Print  |  Notify Moderator

Not sure what sparked the question...maybe be more specific as to your concerns.
(FWIW, there aren't any, based on altitude)


2016 Ram 2500, MotorOps.ca EFIlive tuned, 5” turbo back, 6" lift on 37s
2017 Heartland Torque T29

dougrainer

Carrolton, Texas

Senior Member

Joined: 06/11/2007

View Profile


Offline
Posted: 06/01/21 05:28pm Link  |  Quote  |  Print  |  Notify Moderator

Grit dog wrote:

Not sure what sparked the question...maybe be more specific as to your concerns.
(FWIW, there aren't any, based on altitude)


Correct. What DOES affect DOT tanks is HEAT. Fill a DOT 20# at Ambient 40 degrees and slightly overfill(it can be done even with Auto shut off) and take that unused tank to 100 degree ambient and odds are the Safety blow off valve will release. A correctly filled DOT may still have the same problem when you fill at a lower temp(below 50 degrees) and then go to a higher degree area(over 90 degrees), which is easy to do, if you do not use that tank. Fill in the winter and not use and then take it out in the hot summer. This used to be more of a problem years ago(DOT tanks had no auto shut off)when unqualified/Ignorant LP fillers would attempt to "top off" the DOT fill and not fill by weight. Now, with Auto shut off fill valves this is a rare occurance. Doug

time2roll

Southern California

Senior Member

Joined: 03/21/2005

View Profile



Good Sam RV Club Member


Posted: 06/01/21 05:45pm Link  |  Quote  |  Print  |  Notify Moderator

Less chance of getting any butane mix at 8900 feet.


2001 F150 SuperCrew
2006 Keystone Springdale 249FWBHLS
675w Solar pictures back up

Dutch_12078

Winters south, summers north

Senior Member

Joined: 10/07/2008

View Profile



Good Sam RV Club Member

Offline
Posted: 06/01/21 06:03pm Link  |  Quote  |  Print  |  Notify Moderator

time2roll wrote:

Less chance of getting any butane mix at 8900 feet.


LPG (commercial propane) typically contains 90%+ propane and less than 10% butane.


Dutch
2001 GBM Landau 34' Class A
F53 chassis, Triton V10, TST TPMS
Bigfoot Automatic Leveling System
2011 Toyota RAV4 4WD/Remco pump
ReadyBrute Elite tow bar/Blue Ox baseplate


C Schomer

Pueblo West, Co.

Senior Member

Joined: 12/26/2000

View Profile


Offline
Posted: 06/01/21 07:15pm Link  |  Quote  |  Print  |  Notify Moderator

Are you sure it isn't the person who's doing the filling that's shorting you? I get tanks filled at Costco, Glendale Az. And they short all of them 2 pounds. I get them back to Co. And I top them, to the OPD float valve, no problem.
LP and NG etc. automatically derate at higher elevation because the density is lowered. Its either Charles or Boyles law. It been too long since college! The formula is very simple. It has to do with old and new volumes and pressures. Craig

BarabooBob

Baraboo, WI

Senior Member

Joined: 12/28/2015

View Profile



Good Sam RV Club Member

Offline
Posted: 06/01/21 07:34pm Link  |  Quote  |  Print  |  Notify Moderator

I get my tanks filled t place that charges me my the gallon. They set the tank on a scale to tell when the tank is at max full and charge me for the gallons to top off.
Most of the places around here that exchange tanks are currently selling 15 pounds of propane in the tanks. They tell you on the sign that is posted that you are paying for 15 pounds so it is not fraud. You just have to read the sign.


Bob & Dawn Married 32 years
2017 Viking 17RD
2011 Ford F150 3.5L Ecoboost 420 lb/ft
Retired


red31

Dallas

Senior Member

Joined: 08/04/2008

View Profile


Offline
Posted: 06/01/21 08:44pm Link  |  Quote  |  Print  |  Notify Moderator

craig7h, which ever is colder!

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 2  
Next

Open Roads Forum  >  Tech Issues

 > Filling of Propane tank
Search:   Advanced Search

Search only in Tech Issues


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:




© 2021 CWI, Inc. © 2021 Good Sam Enterprises, LLC. All Rights Reserved.